High Seas Forecast
Issued by NWS

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FZPN40 PHFO 201542 CCA
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC FRI JAN 20 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT
OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE MORE THAN
TWICE THE SIGNIFICANT WAVE HEIGHT.

THIS HIGH SEAS FORECAST USES 1-MINUTE AVERAGE WINDS WHICH MAY BE
HIGHER THAN 10-MINUTE AVERAGE WINDS.

SECURITE

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 1200 UTC JAN 20 2017.
24 HOUR FORECAST VALID 1200 UTC JAN 21 2017.
48 HOUR FORECAST VALID 1200 UTC JAN 22 2017.

.WARNINGS.

...GALE WARNING...
.RELOCATED FRONT 30N160W TO 24N170W TO 21N180W TO 20N160E. E END
MOVING E 35 KT SLOWING TO LESS THAN 10 KT W OF 180W. WINDS NE 25 TO
35 KT WITHIN 400 NM N OF FRONT BETWEEN 171W AND 166E. WINDS NE AND E
20 TO 30 KT ELSEWHERE WITHIN 480 NM N OF FRONT W OF 168W.
ALSO...WINDS NE AND E WITHIN 360 NM S OF FRONT W OF 175W.
.24 HOUR FORECAST FRONT 30N142W TO 21N160W TO 18N180W TO 17N170E.
WINDS NE 25 TO 35 KT WITHIN 420 NM N OF FRONT BETWEEN 160W AND 180W.
WINDS 20 TO 30 KT ELSEWHERE N OF FRONT. ALSO WINDS NE TO E 20 TO 30
KT BETWEEN FRONT AND 08N FROM 165W TO 168E.
.48 HOUR FORECAST FRONT 20N140W TO 18N155W TO 17N175E. WINDS NE 25 TO
35 KT WITHIN 400 N OF FRONT E OF 170W. STRONGEST WINDS BETWEEN 145W
AND 170W. WINDS NE TO E WITHIN 480 NM N OF FRONT. ALSO...WINDS NE
TO E 20 TO 30 KT WITHIN 400 NM S OF FRONT BETWEEN 145W AND 180W.
W OF 150W. WINDS NE TO E 20 TO 25 KT BETWEEN 14N AND 06N W OF 175W.

...GALE WARNING...
.FRONT APPROACHING FORECAST AREA FROM W. WINDS S TO SW  TO 20 TO 30
KT N OF 26N W OF 178E BY 201800 UTC.
.24 HOUR FORECAST FRONT 30N161E TO 29N160E MOVING E 35 KT.
24N150E. WINDS SW 25 TO 40 KT N OF 27N W OF 175E. WINDS S AND SW 20
TO 25 KT ELSEWHERE N OF 25N W OF 180W.
.48 HOUR FORECAST FRONT 30N169W TO 24N180W TO 22N165E. WINDS S AND SW
25 TO 40 KT N OF 28N BETWEEN FRONT AND 170W. WINDS S AND SW
ELSEWHERE N OF 26N BETWEEN 170W AND 175E.

.SYNOPSIS AND FORECAST.

.FRONT 28N140W TO 30N147W. E END MOVING S NEAR 10 KT. W END OF FRONT
MOVING NE 15 KT.
.24 HOUR FORECAST WEAK FRONT 26N143W TO 30N145W.
.48 HOUR FORECAST FRONT MOVED E OF FORECAST WATERS.

.RELOCATED HIGH NEAR 26N140W 1024 MB MOVING E 15 KT. RIDGES FROM HIGH
TO 24N140W AND FROM HIGH TO 25N158W. RIDGE W OF HIGH DISSIPATING.
.24 HOUR FORECAST HIGH MOVED E OF FORECAST WATERS.

.RIDGE 30N168E TO 27N160E. E END OF RIDGE NEARLY STATIONARY THENCE
PART OF RIDGE W OF 165E MOVING S TO NEAR 10 KT.

.WINDS 20 KT OR LESS ELSEWHERE.

.SEAS 10 TO 18 FT 10 TO 15 FT N OF 24N E OF 165W. SEAS 8 TO 13 FT
BETWEEN 18N AND 04N E OF 180W...AND WITHIN 150 NM EITHER SIDE OF A
LINE FROM 24N174W TO 17N160E. REST OF AREA 8 TO 11 FT EXCEPT 8 FT OR
LESS N OF A LINE FROM 30N173E TO 23N160E AND S OF 07N W OF 170W AND
S OF 07N E OF 180W.
.24 HOUR FORECAST SEAS 12 TO 18 FT N OF 24N E OF 165W. SEAS 10 TO 14
FT ELSEWHERE BETWEEN 26N AND 07N FROM 157W TO 167E. SEAS 8 TO 15 FT
N OF A LINE FROM 30N163E TO 27N160E. SEAS 8 TO 12 FT ELSEWHERE
EXCEPT 8 FT OR LESS S OF 24N E OF 157W...AND S OF 05N E OF 175E AND
S OF 10N W OF 170E.
.48 HOUR FORECAST SEAS 12 TO 23 FT N OF A LINE 30N180W TO 27N170E TO
22N160E. SEAS 12 TO 20 FT N OF 22N E OF 152W. SEAS 8 TO 15 FT
ELSEWHERE BETWEEN 27N AND 10N FROM 150W TO 170E. SEAS 7 TO 10 FT
ELSWHERE N OF 03N.

.COR ITCZ 047N140W TO 06N152W TO 05N176W. ISOLATED TSTMS WITHIN 100
NM OF ITCZ BETWEEN 160W AND 172W.

$$

.FORECASTER LAU. HONOLULU HI.



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